487 lines
14 KiB
C
487 lines
14 KiB
C
/* crypto/evp/e_des3.c */
|
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
* All rights reserved.
|
|
*
|
|
* This package is an SSL implementation written
|
|
* by Eric Young (eay@cryptsoft.com).
|
|
* The implementation was written so as to conform with Netscapes SSL.
|
|
*
|
|
* This library is free for commercial and non-commercial use as long as
|
|
* the following conditions are aheared to. The following conditions
|
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
|
* included with this distribution is covered by the same copyright terms
|
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
|
*
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
* the code are not to be removed.
|
|
* If this package is used in a product, Eric Young should be given attribution
|
|
* as the author of the parts of the library used.
|
|
* This can be in the form of a textual message at program startup or
|
|
* in documentation (online or textual) provided with the package.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* "This product includes cryptographic software written by
|
|
* Eric Young (eay@cryptsoft.com)"
|
|
* The word 'cryptographic' can be left out if the rouines from the library
|
|
* being used are not cryptographic related :-).
|
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
|
* the apps directory (application code) you must include an acknowledgement:
|
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* The licence and distribution terms for any publically available version or
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
* copied and put under another distribution licence
|
|
* [including the GNU Public Licence.]
|
|
*/
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
#include "cryptlib.h"
|
|
#ifndef OPENSSL_NO_DES
|
|
#include <openssl/evp.h>
|
|
#include <openssl/objects.h>
|
|
#include "evp_locl.h"
|
|
#include <openssl/des.h>
|
|
#include <openssl/rand.h>
|
|
|
|
typedef struct
|
|
{
|
|
union { double align; DES_key_schedule ks[3]; } ks;
|
|
union {
|
|
void (*cbc)(const void *,void *,size_t,const void *,void *);
|
|
} stream;
|
|
} DES_EDE_KEY;
|
|
#define ks1 ks.ks[0]
|
|
#define ks2 ks.ks[1]
|
|
#define ks3 ks.ks[2]
|
|
|
|
#if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
|
|
/* ---------^^^ this is not a typo, just a way to detect that
|
|
* assembler support was in general requested... */
|
|
#include "sparc_arch.h"
|
|
|
|
extern unsigned int OPENSSL_sparcv9cap_P[];
|
|
|
|
#define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
|
|
|
|
void des_t4_key_expand(const void *key, DES_key_schedule *ks);
|
|
void des_t4_ede3_cbc_encrypt(const void *inp,void *out,size_t len,
|
|
DES_key_schedule *ks,unsigned char iv[8]);
|
|
void des_t4_ede3_cbc_decrypt(const void *inp,void *out,size_t len,
|
|
DES_key_schedule *ks,unsigned char iv[8]);
|
|
#endif
|
|
|
|
static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv,int enc);
|
|
|
|
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv,int enc);
|
|
|
|
static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
|
|
|
|
#define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
|
|
|
|
/* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
|
|
|
|
static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
BLOCK_CIPHER_ecb_loop()
|
|
DES_ecb3_encrypt((const_DES_cblock *)(in + i),
|
|
(DES_cblock *)(out + i),
|
|
&data(ctx)->ks1, &data(ctx)->ks2,
|
|
&data(ctx)->ks3,
|
|
ctx->encrypt);
|
|
return 1;
|
|
}
|
|
|
|
static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
while (inl>=EVP_MAXCHUNK)
|
|
{
|
|
DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
|
|
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv, &ctx->num);
|
|
inl-=EVP_MAXCHUNK;
|
|
in +=EVP_MAXCHUNK;
|
|
out+=EVP_MAXCHUNK;
|
|
}
|
|
if (inl)
|
|
DES_ede3_ofb64_encrypt(in, out, (long)inl,
|
|
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv, &ctx->num);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
DES_EDE_KEY *dat = data(ctx);
|
|
|
|
#ifdef KSSL_DEBUG
|
|
{
|
|
int i;
|
|
fprintf(stderr,"des_ede_cbc_cipher(ctx=%p, buflen=%d)\n", ctx, ctx->buf_len);
|
|
fprintf(stderr,"\t iv= ");
|
|
for(i=0;i<8;i++)
|
|
fprintf(stderr,"%02X",ctx->iv[i]);
|
|
fprintf(stderr,"\n");
|
|
}
|
|
#endif /* KSSL_DEBUG */
|
|
if (dat->stream.cbc)
|
|
{
|
|
(*dat->stream.cbc)(in,out,inl,&dat->ks,ctx->iv);
|
|
return 1;
|
|
}
|
|
|
|
while (inl>=EVP_MAXCHUNK)
|
|
{
|
|
DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
|
|
&dat->ks1, &dat->ks2, &dat->ks3,
|
|
(DES_cblock *)ctx->iv, ctx->encrypt);
|
|
inl-=EVP_MAXCHUNK;
|
|
in +=EVP_MAXCHUNK;
|
|
out+=EVP_MAXCHUNK;
|
|
}
|
|
if (inl)
|
|
DES_ede3_cbc_encrypt(in, out, (long)inl,
|
|
&dat->ks1, &dat->ks2, &dat->ks3,
|
|
(DES_cblock *)ctx->iv, ctx->encrypt);
|
|
return 1;
|
|
}
|
|
|
|
static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
while (inl>=EVP_MAXCHUNK)
|
|
{
|
|
DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
|
|
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
|
|
inl-=EVP_MAXCHUNK;
|
|
in +=EVP_MAXCHUNK;
|
|
out+=EVP_MAXCHUNK;
|
|
}
|
|
if (inl)
|
|
DES_ede3_cfb64_encrypt(in, out, (long)inl,
|
|
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
|
|
return 1;
|
|
}
|
|
|
|
/* Although we have a CFB-r implementation for 3-DES, it doesn't pack the right
|
|
way, so wrap it here */
|
|
static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
size_t n;
|
|
unsigned char c[1],d[1];
|
|
|
|
for(n=0 ; n < inl ; ++n)
|
|
{
|
|
c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
|
|
DES_ede3_cfb_encrypt(c,d,1,1,
|
|
&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv,ctx->encrypt);
|
|
out[n/8]=(out[n/8]&~(0x80 >> (unsigned int)(n%8))) |
|
|
((d[0]&0x80) >> (unsigned int)(n%8));
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
while (inl>=EVP_MAXCHUNK)
|
|
{
|
|
DES_ede3_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,
|
|
&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv,ctx->encrypt);
|
|
inl-=EVP_MAXCHUNK;
|
|
in +=EVP_MAXCHUNK;
|
|
out+=EVP_MAXCHUNK;
|
|
}
|
|
if (inl)
|
|
DES_ede3_cfb_encrypt(in,out,8,(long)inl,
|
|
&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
|
|
(DES_cblock *)ctx->iv,ctx->encrypt);
|
|
return 1;
|
|
}
|
|
|
|
BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
|
|
EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_DEFAULT_ASN1,
|
|
des_ede_init_key, NULL, NULL, NULL,
|
|
des3_ctrl)
|
|
|
|
#define des_ede3_cfb64_cipher des_ede_cfb64_cipher
|
|
#define des_ede3_ofb_cipher des_ede_ofb_cipher
|
|
#define des_ede3_cbc_cipher des_ede_cbc_cipher
|
|
#define des_ede3_ecb_cipher des_ede_ecb_cipher
|
|
|
|
BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
|
|
EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_DEFAULT_ASN1,
|
|
des_ede3_init_key, NULL, NULL, NULL,
|
|
des3_ctrl)
|
|
|
|
BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
|
|
EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_DEFAULT_ASN1,
|
|
des_ede3_init_key, NULL, NULL, NULL,
|
|
des3_ctrl)
|
|
|
|
BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
|
|
EVP_CIPH_RAND_KEY|EVP_CIPH_FLAG_DEFAULT_ASN1,
|
|
des_ede3_init_key, NULL, NULL, NULL,
|
|
des3_ctrl)
|
|
|
|
static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
DES_cblock *deskey = (DES_cblock *)key;
|
|
DES_EDE_KEY *dat = data(ctx);
|
|
|
|
dat->stream.cbc = NULL;
|
|
#if defined(SPARC_DES_CAPABLE)
|
|
if (SPARC_DES_CAPABLE)
|
|
{
|
|
int mode = ctx->cipher->flags & EVP_CIPH_MODE;
|
|
|
|
if (mode == EVP_CIPH_CBC_MODE)
|
|
{
|
|
des_t4_key_expand(&deskey[0],&dat->ks1);
|
|
des_t4_key_expand(&deskey[1],&dat->ks2);
|
|
memcpy(&dat->ks3,&dat->ks1,sizeof(dat->ks1));
|
|
dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
|
|
des_t4_ede3_cbc_decrypt;
|
|
return 1;
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef EVP_CHECK_DES_KEY
|
|
if (DES_set_key_checked(&deskey[0],&dat->ks1)
|
|
!! DES_set_key_checked(&deskey[1],&dat->ks2))
|
|
return 0;
|
|
#else
|
|
DES_set_key_unchecked(&deskey[0],&dat->ks1);
|
|
DES_set_key_unchecked(&deskey[1],&dat->ks2);
|
|
#endif
|
|
memcpy(&dat->ks3,&dat->ks1,
|
|
sizeof(dat->ks1));
|
|
return 1;
|
|
}
|
|
|
|
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
DES_cblock *deskey = (DES_cblock *)key;
|
|
DES_EDE_KEY *dat = data(ctx);
|
|
|
|
#ifdef KSSL_DEBUG
|
|
{
|
|
int i;
|
|
fprintf(stderr,"des_ede3_init_key(ctx=%p)\n", ctx);
|
|
fprintf(stderr,"\tKEY= ");
|
|
for(i=0;i<24;i++) fprintf(stderr,"%02X",key[i]); fprintf(stderr,"\n");
|
|
if (iv)
|
|
{
|
|
fprintf(stderr,"\t IV= ");
|
|
for(i=0;i<8;i++) fprintf(stderr,"%02X",iv[i]); fprintf(stderr,"\n");
|
|
}
|
|
}
|
|
#endif /* KSSL_DEBUG */
|
|
|
|
dat->stream.cbc = NULL;
|
|
#if defined(SPARC_DES_CAPABLE)
|
|
if (SPARC_DES_CAPABLE)
|
|
{
|
|
int mode = ctx->cipher->flags & EVP_CIPH_MODE;
|
|
|
|
if (mode == EVP_CIPH_CBC_MODE)
|
|
{
|
|
des_t4_key_expand(&deskey[0],&dat->ks1);
|
|
des_t4_key_expand(&deskey[1],&dat->ks2);
|
|
des_t4_key_expand(&deskey[2],&dat->ks3);
|
|
dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
|
|
des_t4_ede3_cbc_decrypt;
|
|
return 1;
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef EVP_CHECK_DES_KEY
|
|
if (DES_set_key_checked(&deskey[0],&dat->ks1)
|
|
|| DES_set_key_checked(&deskey[1],&dat->ks2)
|
|
|| DES_set_key_checked(&deskey[2],&dat->ks3))
|
|
return 0;
|
|
#else
|
|
DES_set_key_unchecked(&deskey[0],&dat->ks1);
|
|
DES_set_key_unchecked(&deskey[1],&dat->ks2);
|
|
DES_set_key_unchecked(&deskey[2],&dat->ks3);
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
|
|
{
|
|
|
|
DES_cblock *deskey = ptr;
|
|
|
|
switch(type)
|
|
{
|
|
case EVP_CTRL_RAND_KEY:
|
|
if (RAND_bytes(ptr, c->key_len) <= 0)
|
|
return 0;
|
|
DES_set_odd_parity(deskey);
|
|
if (c->key_len >= 16)
|
|
DES_set_odd_parity(deskey + 1);
|
|
if (c->key_len >= 24)
|
|
DES_set_odd_parity(deskey + 2);
|
|
return 1;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
const EVP_CIPHER *EVP_des_ede(void)
|
|
{
|
|
return &des_ede_ecb;
|
|
}
|
|
|
|
const EVP_CIPHER *EVP_des_ede3(void)
|
|
{
|
|
return &des_ede3_ecb;
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_SHA
|
|
|
|
#include <openssl/sha.h>
|
|
|
|
static const unsigned char wrap_iv[8] = {0x4a,0xdd,0xa2,0x2c,0x79,0xe8,0x21,0x05};
|
|
|
|
static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
|
|
int rv = -1;
|
|
if (inl < 24)
|
|
return -1;
|
|
if (!out)
|
|
return inl - 16;
|
|
memcpy(ctx->iv, wrap_iv, 8);
|
|
/* Decrypt first block which will end up as icv */
|
|
des_ede_cbc_cipher(ctx, icv, in, 8);
|
|
/* Decrypt central blocks */
|
|
/* If decrypting in place move whole output along a block
|
|
* so the next des_ede_cbc_cipher is in place.
|
|
*/
|
|
if (out == in)
|
|
{
|
|
memmove(out, out + 8, inl - 8);
|
|
in -= 8;
|
|
}
|
|
des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
|
|
/* Decrypt final block which will be IV */
|
|
des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
|
|
/* Reverse order of everything */
|
|
BUF_reverse(icv, NULL, 8);
|
|
BUF_reverse(out, NULL, inl - 16);
|
|
BUF_reverse(ctx->iv, iv, 8);
|
|
/* Decrypt again using new IV */
|
|
des_ede_cbc_cipher(ctx, out, out, inl - 16);
|
|
des_ede_cbc_cipher(ctx, icv, icv, 8);
|
|
/* Work out SHA1 hash of first portion */
|
|
SHA1(out, inl - 16, sha1tmp);
|
|
|
|
if (!CRYPTO_memcmp(sha1tmp, icv, 8))
|
|
rv = inl - 16;
|
|
OPENSSL_cleanse(icv, 8);
|
|
OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
|
|
OPENSSL_cleanse(iv, 8);
|
|
OPENSSL_cleanse(ctx->iv, 8);
|
|
if (rv == -1)
|
|
OPENSSL_cleanse(out, inl - 16);
|
|
|
|
return rv;
|
|
}
|
|
|
|
static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
unsigned char sha1tmp[SHA_DIGEST_LENGTH];
|
|
if (!out)
|
|
return inl + 16;
|
|
/* Copy input to output buffer + 8 so we have space for IV */
|
|
memmove(out + 8, in, inl);
|
|
/* Work out ICV */
|
|
SHA1(in, inl, sha1tmp);
|
|
memcpy(out + inl + 8, sha1tmp, 8);
|
|
OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
|
|
/* Generate random IV */
|
|
RAND_bytes(ctx->iv, 8);
|
|
memcpy(out, ctx->iv, 8);
|
|
/* Encrypt everything after IV in place */
|
|
des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
|
|
BUF_reverse(out, NULL, inl + 16);
|
|
memcpy(ctx->iv, wrap_iv, 8);
|
|
des_ede_cbc_cipher(ctx, out, out, inl + 16);
|
|
return inl + 16;
|
|
}
|
|
|
|
static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
/* Sanity check input length: we typically only wrap keys
|
|
* so EVP_MAXCHUNK is more than will ever be needed. Also
|
|
* input length must be a multiple of 8 bits.
|
|
*/
|
|
if (inl >= EVP_MAXCHUNK || inl % 8)
|
|
return -1;
|
|
if (ctx->encrypt)
|
|
return des_ede3_wrap(ctx, out, in, inl);
|
|
else
|
|
return des_ede3_unwrap(ctx, out, in, inl);
|
|
}
|
|
|
|
static const EVP_CIPHER des3_wrap = {
|
|
NID_id_smime_alg_CMS3DESwrap,
|
|
8, 24, 0,
|
|
EVP_CIPH_WRAP_MODE|EVP_CIPH_CUSTOM_IV|EVP_CIPH_FLAG_CUSTOM_CIPHER
|
|
|EVP_CIPH_FLAG_DEFAULT_ASN1,
|
|
des_ede3_init_key, des_ede3_wrap_cipher,
|
|
NULL,
|
|
sizeof(DES_EDE_KEY),
|
|
NULL,NULL,NULL,NULL };
|
|
|
|
|
|
const EVP_CIPHER *EVP_des_ede3_wrap(void)
|
|
{
|
|
return &des3_wrap;
|
|
}
|
|
|
|
# endif
|
|
#endif
|